I get this error, while I don't see any issue in that:
posts.map is not a function
import React from 'react'
import { useSelector } from 'react-redux'
export const PostsList = () => {
const posts = useSelector(state => state.posts)
const renderedPosts = posts.map(post => (
<article className="post-excerpt" key={post.id}>
<h3>{post.title}</h3>
<p className="post-content">{post.content.substring(0, 100)}</p>
</article>
))
return (
<section className="posts-list">
<h2>Posts</h2>
{renderedPosts}
</section>
)
}
This is my code Sandbox: https://codesandbox.io/s/wandering-darkness-6hi04d?file=/src/features/posts/PostsList.js
Your problem in the file store.js
export default configureStore({
reducer: () => ({
posts: postsReducer
})
});
Modify this file as follows :
export default configureStore({
reducer: {
posts: postsReducer
}
});